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东秦岭北坡,陕西洛南地区,有一套古老的冰碛层,在洛南县石门以北,洛(南)—华(县)公路23公里处、上张湾一带出露良好,该处地层剖面清晰,露头连续,顶底界限清楚,岩石变质轻微,岩性特殊,结构明显,便于观察研究。 自1958年杨志坚报告豫西“临汝冰碛层”以后,1963年王日伦指出,洛南地区有冰碛层存在,并与罗圈组对比。1976年陕西省地质局六队、区调队,进一步肯定了冰碛层的存在,并作了比较详细的研究和划分。其间,西北大学、西北地质研究所、河南省地质研究所等亦曾进行过一些零星的工作。前人均将冰碛层与罗圈组对比,把寒武系底界划在辛集
There is an ancient moraine layer in the north slope of East Qinling and in the Luonan area of Shaanxi. It is located 23 kilometers north of Shimen County of Luonan County and 23 kilometers of Luo (South) -Hua (County) Highway. Department of clear section of the formation, continuous outcrops, clear top and bottom boundaries, rock metamorphism slightly, special lithology, the structure is obvious, easy to observe and study. Since Yang Zhijian’s report of the “Linru moraine layer” in western Henan Province in 1958, Wang Rilun pointed out in 1963 that there are moraine layers in the Luonan area and is contrasted with the Luopu Formation. In 1976, Shaanxi Provincial Bureau of Geology six teams, district transfer team, further affirmed the existence of moraine layer, and made a more detailed study and division. In the meantime, Northwestern University, Northwest Institute of Geology, Henan Institute of Geology, also conducted some sporadic work. The former per capita moraine layer and Luo circle comparison, the bottom line of the Cambrian Department drawn in Xinji